Apparatus for use in cement lasting footwear



Oct. 21, 1952 J. 5. KAMBORIAN 2,614,527

APPARATUS FOR USE IN CEMENT LASTING FOOTWEAR Filed April 19, 1949 3 Sheets-Sheet 1 Oct. 21, 1952 5. KAMBORlAN 2,614,527

APPARATUS FOR USE IN CEMENT LASTING FOOTWEAR Filed April 19, 1949 5 Sheets-Sheet 2 1952 J. s. KAMBORIAN APPARATUS FOR USE IN CEMENT LASTING FOOTWEAR 3 Sheets-Sheet Filed April 19, 1949 omega? spreader foot, but with the bottom member and valve omitted;

Fig. 3 is a bottom view of the device shown in Fig. 2, but with certain parts omitted;

Fig. 4 is a plan view of a plate which forms the floor of a recess in the underside of the foot;

Fig. 5 is a plan view of a resilient closure member normally operative to prevent leakage of adhesive from the delivery orifice;

Fig. 6 is a fragmentary view, on a plane similar to that of Fig. 2, but to larger scale, and

illustrating a modified form of the delivery foot, certain parts being omitted;

' Fig. 7 is a plan view of the bottom member of the adhesive container illustrated in Fig. 6;

Fig. 8 is a bottom view of the bottom member of the container of Fig. 6;

Fig. 9 is a fragmentary bottom view of the delivery foot of the device of Fig. 6 with the floor plate and valve member omitted;

Fig. 10 is a plan view of the valve member of the device of Fig. 6;

Fig. 11 is a plan view of the floor block for the delivery foot of the device of Fig. 6;

Fig. 12 is a fragmentary vertical section, in the same plane as Fig. 6, but to larger scale, showing the delivery foot with its valve member and floor block assembled, and with the foot arranged in operative position with relation to a shoe insole;

Fig. 13 is a fragmentary bottomview of a shoe insole (assembled with the upper of the shoe) and showing the shape of the gob of adhesive delivered by the apparatus of the present invention; and

Fig. 14 is a view similar to Fig. 16 but showing how the original gob of adhesive may be spread.

over a larger area of the insole by the action of the delivery or spreader foot.

The apparatus of the'present invention is designed for use in performing a step in the end lasting of shoes by the use of an end-lasting machine, the latter being of any desirable or conventional type. For convenience in description, the operation is herein outlined as applied to the cement lasting of the toe portion of a shoe, but without limitation to this specific use of the apparatus. Desirably the portable fluid container and associated parts of the present apparatus is so supported that the operator may apply it to the shoe without being obliged to sustain its entire weight, although with sufficient freedom of movement to enable it to perform its desired function. However, it is not essential that the device be thus supported, since it may be entirely free from other parts and during intervals between successive uses may be rested upon any suitable support.

As illustrated in Fig. 1, there is provided a stand I having a heavy base B, which may be a casting, and which may be bolted to the floor in convenient proximity to the end-lasting apparatus. A vertical rod or length of rigid tubing 2 is fixed in the base B and at a convenient height is provided with a fixed collar 3 which forms a support for a collar 4 which is rotatable on the rod 2, and to which is secured one end of rigid arm 5 extending substantially horizontally to the desired distance from the rod 2 and which, as here illustrated, is bent at 6 to provide the upwardly inclined brace member 7, whose upper end is secured to a second collar 8 which turns freely on the rod 2. The arm 5 constitutes the immediate support for the adhesive-applying device 9 of the present invention which, as here illustrated, is suspended from the arm 5 by means of an extensible coiled spring [0. This spring is of sufficient length and flexibility so that, although sustaining the weight of the dispensing device when the latter is notin use, nevertheless permits the dispensing device to be moved into operative relation to a shoe disposed in the lasting machine in readiness tohave theupstanding toe portion of the lasting margin wiped down onto the insole.

The applying device 9 is here shown (Fig. 2) as comprising a length of cylindrical tubing ll, screw-threaded at its upper end for the reception of an internally screw-threaded annulus l2 which, when assembled with the member H, forms, in effect, a radial flange at the upper end of the latter. The tube H is also internally threaded at its lower end for engagement with an internally screw-threaded boss l3 forming an integral portion of the bottom member 14. This bottom member may be .a casting'and, as'here illustrated, is of substantial verticalthickness, as compared with the thickness of the tube IL. This heavy bottom member is'advantageous when. a thermoplastic adhesive is usedysince it serves to conduct heat from the heating units to theactual point of deposit of the adhesive, thus keep-- ing the adhesive fluid in all of the passages lead- The bottom member I4 is provided with a rigid extension [5 at one: side, herein referred to as the delivery or spreader foot nozzle, this extension [5 having a curved. outer edge 16 of such shape and dimensions that said edge may be fitted within the upstanding lasting margin of the shoe upper at the toe end The underside of the foot I5 is pro-- vided with a recess or cavity I I (Fig. 3) sub-- stantially segmental in plan view and open ating to the delivery orifice.

of the shoe.

the underside of the foot and which communicates, by means of a passage IS, with the interior chamber IQ of the adhesive container defined.

by the tube H and the bottom member l4.

As shown in Fig. 2 the upper wall of the: recess I! is so shaped as to provide a substan;- tially horizontal shoulder I1 and the vertical rear wall of the recess is provided with a slot 20..

A boss H projects down at the center recess IT. The rear edge of a floor plate 20*- (Figs. 3 and 4), which may be of thin sheet steel or the like and which is'of segmental shape, having the curved forward edge '22, is fitted within the slot The forward edge 22 of' this floor plate 2|) is curved to substantially the same curvature as the inner surface 22 of the lower partof the recess l1, said surface 22 being substantially concentric with the outer surface "5 of the foot, but of lesser radius, the edge 22 being spaced from the surface 22 -todefine a narrow delivery orifice which is of substantially U-shape or horseshoe shape in plan view. A valve member 23 of thin, flexibla'resilient material, such as spring steel, and which has a contour generally similar to that of the floor plate 20 is arranged immediately above the floor plate and, together with the fioor'plate, is held in assembled but remov able relation to the foot by means of a bolt 26' having a knurled head and which extends down through an opening 26 inthe boss ll and through openings in the valve member and floor plate, and which has screw-threaded engagementwith a nut 21 disposed beneath the'closure plate. To provide room for the nut, the central parts of the floor plate and'valve member are upwardly dished, as shown in Fig. 3. Normally the curved'edge portion of the valve member 23' fluid pressure within the chamber IT exceeds a predetermined amount, the marginal portion of the valve member will flex downwardly and away from/shoulder [1, thus providing communication between. the' 'chamber l2! and the delivery orifice. .Todecrease thewei'ght of the bottom. member M the latter may be providedv with a. recess-"28' at its underside, although this is not essential. The .cover member 29 of the container is'rremoyably connected airtight to the annulus: 12. by bolts 30.:h'aving knurled. heads .so thatzthey may readily be withdrawn and .the cover removed tov facilitate the introduction of adhesive'into-the.

chamber. v Mounted. onzzthe cover 29 (Fig. 2) or integral therewith is. a. valve casing M which. may be a casting-rv a length of bar stock. .As here illustrated,.this; casing is a part separate. from the cover29. and secured to the latter :by a; bolt having axportion 32 which has threaded enga ement with a transverse opening in the casing 31 and which has'a conically shaped head portionH33 which seats in anopening of oomplemental shape in-theeover-ZS so as ,to'provide a ,leaktight connection: between the. cover. and thevalve casing. Asrshown inFigs. l and. 2, the casing 3| has an upstanding lug 3i. having a transverse hole 31 which receives a boltby means of which a shackle 3| isattached to the. valve casing; fl'he lower endofspring I0 is attached to the shackle 'ThGJVaIV casing. 3 I has. a. horizontally ext end ingbore; the. left-hand portion of which; is e.nlargedand internally screw-threaded. for, the. re-;

ception of ascrew-threaded nipple 34 forming;

apart of a:plug.3 provided with. internal screw; threads at 35 forthe'reception eta pipefitting. to which. is connected one. end of. afiexible tube l-I (Fig. 1) extending. .toas'ource of compressed air; for 'example,.an air pump orsstoragetank.

:Thebore in the. valve casing. 3| comprises an intermediate. enlargement 31 forming a valve.

chamber, this chamber: having the conical end.

wall 39 forming a scatter the ball valve 3.8.

ball valve. is normally. kept seated; by the: air; pressure in thechamber 3.1., s: arranged to slide; ina portion 49 ofthe bore in the valve casinggSl... This rod- 42 .is of substantially less diameteitthan. the portion 4a of the. bore... One end of .the'rod.

: A valve-actuating rod .42.

isiopposed .to. thexvalve38. and. at itsother end is.

opposed to a ball 43,1ocated within the horizontal borein thecasingtl, andwhich is engaged by the left-hand end (Fig. 2') of a push rod 44 which slides in an axialbore ina plug 45 having-screw threaded engagement withan enlargement of the I right-handendof, the borein the casing 3|, By

movement ofithe rod to the left, as viewed in Fig.2,the. ball 43 is forced against the-rod and this, in turn, pushes against and unseats the valve 38, permitting compressed air to enter the chamber. 40. Theboltwhich connects the casing 3i to the cov'eri29 has an axial bore 4,! through.

which air from the chamber 40 may enter the chamber i 9 so. to: apply pressure to the upper sur fac'e of liquid adhesive within the chamber'ISQ Th'e-rig'ht-hand end of the rod 44 hasa head 46, which'fen'ga'geslthe upperv end '41 of a trigger lever. pivotfed estates, handle member 49 This handle member is rigidly secured to the right hand end portion of the valve casing 31 and com prisesia grip. portion 50 and 'aspace5l for the accommodation: of theusers'flngers The lower end 52 of the trigger lever extends down into the space 5! whereit-is conveniently located 'for engagement by the user's finger. By pressing the finger member '52,' the trigger lever is swung so as. to unseat the valve 38 to allow compressed air; to! enter the chamber l9.

Since thermoplastic adhesive is the type of adhesive best suited foruse in the lasting operation, by reason of its powerful adhesion and quick setting characteristics, itis desirable to provide for heating the contents of the chamber l9. For this purposethe bottom member 14 is provided with one or more cavities for the reception of electrical heating units 53 (Fig. 3) which may be supplied with current'through flexible conductors from any suitable supply. Preferably, although not necessarily, the supply of heat maybe autom-atically controlled by a thermostat device 54' secured to the base I 4 and which is designed automatically to maintain a substantiallyconstant predetermined temperature within the chamber-l9.

A' slightly modified and preferred construction is-illustrat'ed in Figs. 6 to12, inclusive. In this arrangement the bottom member M has a projeeting portion which extends further from the wall of the container than the foot or nozzle I5 shown-in the previous figures, the foot or nozzle proper (I 5?) being connected tothe'bottom- M by a relatively narrow neck portion N. This ar rangement may be more convenient to use, in

dealing with shoes of certain types and, in particular', where the side lasting has already been completed; In this arrangement the foot or nozzle i5? is of more or'less segmental contour havingthe curved forward edge [6 like that of the foot or nozzle l5, and having a recess I10 in its undersurface, this recess having the curved forward'wall gill which is substantially concentric with'the "exterior surface 46 of the foot. The foot has 'ajsubstantially flat bottom surface l5" and therec'ess I10 communicates with a chamber [12' within'the foot which-in turn is connected by a passage lafl to the interior chamber. [.9 of the container. v I

1A.,sginental closure'block I13 '(Figs. 8, 11, and I2) is arranged within the recess I10, this closure block having a curved forward edge I14 which is concentric with, of smaller radius than. and spaced from the wall. I'll of the recess H0 so as! to defineza substantially U-shaped delivery orifice [15- (Figs; 8 and 12). The curved edge of the block H3 is downwardly beveled, as shown at HB, and above this. block is arranged;.the segmental valve member 230 .(Fig. .10) I having the curved forward edge-.250: which: normally contacts the horizontal shoulder Ill forming a portion of the upper wall of the recess I 10. This valve member 230- is of thin, fiexible,.resilient material, for example spring steel, and is held in assembled relation with the foot It and block I13 by means of removable bolts I'll. Normally the spring" valve member-230 closes communication between the chamber I'HZ and the orifice I15.

The mode of operation of the device is the same whether the device have the delivery foot ornozzle illustrated in'Figpz' or that. illustrated in Fig. 12'. The operator grasps'the handled the device and; by extending the'spring ID, disposes the'foot'so thatits iorward'edge l6 fits within 7-. the upstanding margin M (Fig. 12) of the shoe upper U, the latter-being already assembled with the insole S upon .thelast L. Having placed the delivery foot or. nozzle upon the insole and within the upstanding lastingmargin at the toe of the shoe, theoperator actuates the'finger piece 52 thereby admitting compressed air to the chamber [9. Assumingthat there is within the chamber IS a body of hot fluid, thermoplastic adhesive, and that this liquid adhesive fills the passages l8 (or [80) and the chamber within the heated delivery foot, the opening of the valve 38 admits a charge of compressed air into the container which immediately raises the pressure of the liquid in the chamber within the dispensing foot to a point such that the valve 23 (or 23!!) automatically opens and allows a portion ofadhesive to be forced outwardly through the U- shaped orifice thereby depositing on the surface of the insole S a gob G of adhesive, Fig. 13, which is substantially U-shaped in contour. "This gob of adhesive lies close to the outer edge of the insole, following the contour of said edge, the amount of adhesive constituting this gob depending upon the length of time which the operator holds the finger piece 52 retracted. Substantially as soon as he releases the pressure from the finger 52, the valve device 23 (or 230) automatically cuts ofi communication between the chamber within the dispensing foot or nozzle and the orifice so that the delivery of adhesive ceases. The operator may lift the dispensing foot directly up from the insole if he so desire, thus leaving the adhesive in the substantially U-shaped form shown in Fig. 13. On the other hand, if he so desire, he may move the dispensing foot or nozzle rearwardly while keeping it in contact with the insole, with the result that the original U-shaped gob of adhesive is'spread rearwardly to-form anarea A (Fig. 14) of greater or lesser extent, depending upon the distance to which the foot is drawn rearwardly along the insole while in contact with the latter. As soon as the dispensing ,and spreading operation has been completed, the operator releases his grasp on the handle 59 and the spring [0 immediately resumes its function of suspending the device from the supportingstand, thus leaving the operator free to use both hands in the final operation of wiping in the toe portion of the lasting margin.

Since the horizontal width of the dispensing orificeis determined by the dimensions of the plates and H3, respectively, and since there plates are removable, it is possible to provide plates of diiferent sizes for alternative use under different conditions, and which may be substituted one for another by the operator thereby to vary the size of the delivery orifice in accordance with the character of the work and in accordance with the type of adhesive employed.

. By'the'use of this apparatus, the adhesive is kept enclosed until it is to be dispensed, thus avoiding waste of adhesive such as occurs when it is kept in an open vessel; only so much adhesive isdelivered at any one time from the con tainer as is requisite for cementing a single shoe so that there is no waste from dripping adhesive on its way from the container to the shoe as customarily occurs when a brush is employed as the applying means; there is noprobable chance of daubing the upper 0f the shoe with adhesive or of spilling adhesive on the lasting machine or on the fioor; the thermoplastic adhesive is kept at the proper temperature and without substantial waste of heat and exactly the'proper amount of adhesive is applied to each shoe and at the desired point without requiring any particular skill onthepart-of the operator.

While certain desirable embodiments of the invention have been herein disclosed by way of example, it is to be'understood that the invention is broadly inclusive of any and all other modifications falling withinthe scope of the appended claims. k

I claimr v i1. Apparatus for use in applying adhesive the-marginal portion of a shoe insole as a step in the lasting operation, said apparatus comprisingan air-tight container for fiuid adhesive, 2. foot having a curved forward edge designed to fit within the upstanding lasting margin at the end of the shoe and having an undersurface designed to rest upon the insole, said foot having a single U-shaped delivery orifice in its undersurface, said orifice being concentric with the curved forward edge of the foot, a resilient valve of thin sheet metal normally efiective to close the orifice, means defining a passage for conveying adhesive from the container to said orifice, and means operative to apply pressure to the fluid in the container sufiicient to flex the valve and thereby permit how of adhesive through the orifice.

" 2. For use in toe lasting a shoe, in combination, a rigid foot having a curved forward edge designed to fit within the upstanding lasting margin of the upper at one end of the shoe, the foot having a shallow cavity in its under surface. the forward wall of the cavity being curved concentrically with the curved forward edge of the foot, the curved wall of the cavity having a horizontal shoulder, a plate which forms a floor for the cavity, the fioor plate having a curved forward edge spaced from the curved wall of the cavity to define a narrow U-shaped orifice, and a thin, flexible valve member within the cavity having its forward edge'normally contacting the horizontal shoulder thereby efiectively closing the orifice, and manually controllable means operative to apply force to the valve thereby to flex it away from said shoulder.

35in combination in apparatus for applying adhesive to the marginal portion of one end of a shoe insole, a rigid foot designed to rest upon said end portion of the insole, said foot having a curved forward edgedesigned to fit within the upstanding lasting margin at one end of the shoe, the foot having a shallow, segmental cavity inits under surface, the forward wall of the cavity being curved concentrically with the curved forwardedge of the foot, the curved wall of the cavity having a horizontal shoulder and having a horizontal slot in its rear, vertical wall, a segmental plate which forms a fioor for the cavity,-the plate having a curved, forward edge spaced from the curved wall of the cavity to define -'a narrow U-shaped orifice, and a thin, segmental valve of resilient material whose curved forward edge normally engages the horizontal shoulder of the cavity wall thereby effectively-closing theorifice, and manually controllable means operative to apply force to the curved marginal portion of the valve thereby to flex it away from the shoulder so as to permit escap e'of adhesive through the orifice.

' 4. In combination in apparatus for use in toe lasting, a portable container having a handle for use in manipulating it, a stand operative to support the container when not in use, the container having extensible suspension means for attaching it to the stand, an applying foot rigidly at-' tached to thccontainer, said foot having a curved forward edge designed to be fitted withinthe upstanding lasting margin of a shoe upper at the toe end of the latter, the foot having a single, narrow, "substantially: 'U -shaped delivery orifice concentric with the curved forward edge of the foot and closely adjacent to'but spaced rearwardly from said curved edge, means for delivering air under pressure to the interior of the container, and a manually actuable valve for admitting compressed air from the supply to the container thereby to discharge adhesive through the orifice.

5. In apparatus of the class described, in combination, an airtight portableycontainer having a handle for use in manipulating it, a resiliently extensible suspension element for supporting the container, a-rigid foot projecting from the container near its bottom, said foot having an interior chamber-which communicates with the interior ofthe container, the foot-having a curved forward edge designed to be fitted within the upstanding lasting marginofa shoe upper at the toe end of the latter, the ,foot having-a single,

narrow, substantially: U--shaped delivery-orifice concentric, with the curved forward edge of the foot and closely'adjacentto but spaced rearwardly from said edge, means for delivering air under pressure to the interior of the container,

and a manually actuable part for controlling the delivery of "compressed-air to thecontainer.

6Portable apparatus of the class described comprising a portable air-tight container for adhesive, adelivery foot rigidly attached to the container, the foot having a curved forward edge designed to fit; within the upstanding lasting margin: of the shoe upper and'having a shallow cavity in its under surface, the forward wall of the cavity being spaced frombut closely adjacent to the curved; edgeof the foot, a plate which forms a floor for the cavity, the late having a curvedforward edge spaced from the curved wallof the cavity to providea narrow U -shaped orifice, means for removably connecting the floor plate to the foot, andv manually actuable means operative to increase;- the pressure within the container-thereby to' cause adhesive from the container'to exude from the orifice, and. means for heating-the contents of the container and for heating the foot. I

7. Apparatus for use in applying adhesive to the marginal portion of a shoeinsole as a step in thetoe lasting operation, said-apparatus com-.- prising a portable air-tight container for'fluid adhesive, afoot having a curved'forward. edge designed to fit within. the upstanding lasting margin of the shoe upper and having a shallow cavity min under surface, the forward wall of the cavity beingspaced from but closely adjacent to the curved edge of the foot, 9; plate which forms a floor for the cavity, the plate having a curvedlorward edge spaced from the curved wall orthe cavity to-form' a narrow u shaped orifice, means for removably securing the floor plate to the foot, means defining a passage for conveying adhesive from the container to said orifice, manually actuable means operative to increase the pressure within the container thereby to discharge adhesive from the orifice, and means for heating the foot; H

8'. An appliance i'or'use in toe lasting 'shoes, comprising incombination a portable, airtight containerfor. fluid adhesive, said containerhaving a heavy base provided with an integral projection constituting a deli-very ioot, the foot'hav ing a curved forward edge designed to fit within theupstanding lasting margin of the shoe upper and having a shallow cavity in its under surface, the forward wall of the cavity being concentric With the curved forward edge of the foot, a plate which forms a floor for the cavity, the plate having a curved forward edge spaced from the curved forward wall of the cavity to provide a narrow sage and the orifice, means for delivering air under pressure from a supply to the interior of the container, and a manually actuable valve admitting compressed air'from said supply to the container thereby to discharge adhesive through the orifice. R

9. Apparatusfor use in applying adhesive to the marginal portion of a shoe insole as a step in the toe lasting operation, said apparatus comprising a portable container for fluid adhesive, the container comprising a bottom of heat conducting material having a'chamber therein, an electrical heating unit housed within said chamber and which is o erative to heat the bottom and the adhesive within the container, the bottom comprising a delivery-foot having an undersurface de signed to rest upon the toe portion of the insole, and a forward edge: so curved that it may be fitted within the upstandi'nglasting margin of the'shoe upper'at the the end of the latter, said foot having a narrow delivery orifice of substantially U-shape inits undersurface. means defining a passage for conveying adhesive from the container to said orifice, means, including a manually actuable valve. for adm tting compressed air from a supply to the container thereby to discharge adhesive through the ori'flce.

'10. In combination in apparatus designed to apply adhesive to the toe portion of the insole o as e e ar d orm-sting. a foot havin a substantially flat under surface desi ned to rest upon ,thetoe, portion of the insole and having a c rved,

forward ed e of-a contour a proximating that of the end of the insole. said foot having a delivery orifice, a portable airtight container for fluid adhesive, means for conducting adhesive from the container tc the orifice, means for" delivering air under pressure from a su ply to'the interior of the container, a valve which is normally closed by the pressure of air from said supply, and means for unseat nethevalve'comprisihg a finger-actuable tri er.

11. In comb nat on in a ratus desi ned to apply adhesive'to he toe portion of the insole of a shoe pre'oa -red for last ng, a foot having a substantially fiat under surface designed to rest upon the toe portion of the insole and having a curved forward ed e of a contour ap roximating that of the end of the, insole, said foot having a delivery orifice, a portable, airtight container for fluid adhesive, means for conducting adhesive from the container to the orifice, means for delivering air from under pressure from a supplyto the interior of the container, a valve for controlling the admission of compressed air from said supply to the container. and a, finger-actuable trigger for opening the valve.

12. In apparatus of the class described, in combination, an airtight, portable container having a handle for use in manipulating it, a rigid foot projecting from the container near its bottom, said foot having an interior chamber which communicates with the interior of the con tainer, the foot having a substantiallyfiat under surface designed to rest upon the toe portion of the insole, said foot having a single, substantially U-shaped delivery orifice in its underside through which adhesive may be discharged from the container, a finger-actuable lever pivotally supported by the handle, and a part operable by the lever for unseating the valve thereby to allow compressed air from a supply to enter the container so as to eject adhesive from the orifice.

13. In combination, in apparatus designed to apply adhesive to the toe portion of the insole of a shoe prepared for lasting, a portable container for adhesive, said container having a bottom provided with a projecting foot having a substantially fiat under surface designed to rest upon the toe portion of the insole and having a curved, forward edge of a contour approximating that of the toe end of the insole, the container bottom having a passage leading from the interior of the container to the foot, the foot having a delivery orifice in its undersurface, a valve casing mounted on the container, a normally closed valve therein, means for connecting the valve casing to a supply o com ressed air, a handle for use in manipulating the container, and a finger-operated trigger conveniently arranged for engagement by the finger while grasping the handle thereby to open the valve and admit compressed air to the container.

14. In apparatus designed to apply adhesive to the toe portion of the insole of a shoe prepared for lasting, in combination, an airtight, portable container having a handle for use in manipulating it, a rigid foot, having a substantially fiat under surface projecting from the container near its bottom, said foot having a curved, forward edge of a contour approximating that of the toe end of the insole and having an interior chamber which communicates with the interior of the container, the foot having a s ngle, curved delivery orifice in its underside through which adhesive may be discharged from the container, a valve casing secured to the container, said casing having a connection for a flexible conductor leading from a source of compressed air and also having a passage opening into the interior of the container, a valve normally closing said latter passage, and a finger-actuable element for opening the valve thereby to admit compressed air from said source to the container for ejecting adhesive from the orifice.

15. A portable appliance for use in toe lasting, comprising in combination a portable container for adhesive, a part having therein a delivery orifice, means defining a passage leading from the container to the delivery orifice, means normally operative to prevent escape of adhesive from the orifice, means for delivering air under pressure from a supply, a manually actuable valve for admitting compressed air from said supply to the container thereby to discharge adhesive through the orifice, and means operative to heat the parts which define the delivery orifice and the passage leading thereto.

16. Portable apparatus of the class described comprising a portable, airtight container for thermoplastic adhesive, said container having a bottom and a delivery foot in heat conducting relation to the bottom, said foot having therein a delivery orifice of substantially U-shape, means defining a passage for adhesive leading from the container tothe orifice, means normallypreventing adhesive. from escaping from the orifice, means operative toadmit compressed air to the container thereby to cause adhesive to exude from the orifice, and means to heat the bottom of the 'container..: Y

17. In combination in an apparatus for delivering adhesive to the marginal portion of one end of a shoe insole, a foot having a substantially flat undersurface designed to rest upon the insole, said foot having a curved edge substantially conforming to the curvature of the end of the insole, the foot having a substantially U-shaped orifice in its undersurface, aportable, airtight container for fluid adhesive, a-Iconduit for conveying adhesive from the container to the orifice, movable means normallyclosing the orifice but which moves to orifice-opening position in response to a predetermined pressure at its inner side, means for delivering air from a supply to the interior of the container under 'a pressure-sufficient to move the orifice-closing means to orifice-opening position, and a manually actuable valve foradmitting compressed air from said supply .to the container thereby to discharge'adhesive through the orifice. V i

18. Portable apparatus of the class described comprising a portable container for thermoplastic adhesive, means for heating the container, a delivery foot, said'foot having therein a delivery orifice of substantially U-shape, means defining a passage for'adhesive leading from the container tofthe orifice, a valve normally held closed by spring action, said valve being normally operative to prevent adhesive from exuding from the orifice,'means for delivering air under pressure from a supply to the interior of the container, and a manuallyactuable valve for'admitting compressed air from the supply to the container thereby to discharge adhesive through the orifice.

19. In combination inapparatus of the class described, a foot having a curved forward edge contoured and dimensioned to fit within the up standing last margin at the toe end of the shoe, said foot having an undersurface in which is an orifice having a curvature similar to that of said forward edge of the foot but which is spaced inwardly from said edge, a resilient closure member normally closing said orifice but whichzflexes in response to a predetermined pressure at its inner side thereby to open the orifice, means for delivering air under pressure from a supply to the interior of the container, and a manually actuable valve for admitting compressed air from the supply to the container thereby to discharge adhesive through thexorifice.

20; In apparatus for-use in toe lasting shoes, in combination, aportable, airtight container having a handle for usein manipulating it, a rigid foot having an undersurface designed to contact the toe portion of the insole of a shoe, said foot having a recess at its underside, the upper portion of the recess always communicating with the interior of .the container,- a part forming a fioor for the recess and whoseundersurface is substantially flush with the bottom of the foot, the forward edge of said fioor being so spaced from the forward edge of the recess as to define a delivery orific e,.and valve means normally op.- erative to cut off communication between the upper portion of the recess and the orifice, said charged from the orifice in or d dersurface designed to contact the the portion of'- t e insoleof a shoe, said foot havinga-recess at 'tid'i Sid, the u-pperporti Of the recess always communicating th'eHr-it'erior of the container, a part" forming} a fi'o'or for-the recess and WHOSE undersurrace is Substantially flush the bottom 6f the foot, the forwarded ge of aciasaz said floor being so spaced from the" forwardedge or the recess as to define a delivery orifice, and a resilient, flexible closure normally cutting oil? communication between. the-upper portionor the recess ai-ld tlie orifice.

22'. In combination in apparatus of theclass described, a foot havin a curved forwardedge designed to fit within the upstanding lasting mar gin at one end or the shoe, said foot having anundersu-riac'e provided with. a segment-shaped cavity having its curved edge spaced from and concentric with the-curved forward edge of the foot, asegmental filler block of lesser radius of curvature than the cavity so disposed within the cavity that the-curved edges of the cavity and block are spaced and concentric, the undersurface of the block being substantially flush with the undersurface of the foot, the block being of lesser height than the cavity and thefoot' having an interior chamber which communicates at times with the space between the curved edges of the block and cavity, a closurewhich normally" cuts oif communication between said chamber and said space, and means for supplyin fluid adhesive under pressure to theichamber. f

.,2'S .'In cdmb'nationin apparatus of the class describedfa foothaving a curved forward edge designed to fit within the upstanding lasting margin at the toe end of the shoe, said foothaving an undersurface provided-with a segment-shaped cavity whose curved edgeis' spaced rearwardly of and substantially COIiCIlliliC'fWith the curved forward edge of the foot, a segmental block disposed within the cavity, the curved edges oi the block and cavity being spaced apart and concentric thereby defining between them an orifice of substantially U-shape, the curved edge of the block being downwardly beveled and the foot having an interior chamber which at times communicates with the orifice, a thin, flexible, resilient closure overlying the block and normally cutting fi' communication between the chamber and orifice, and means for delivering fluid adhesive to the chamber under sufficient pressure to flex the closure downwardly toward the beveled surface of the block thereby permitting ejection of adhesive from the orifice.

24. An appliance for use in toe lasting shoes comprising in combination a portable container for fluid adhesive, said appliance comprising a nozzle having a single U-shaped delivery orifice of approximately the radius of curvature of the toe end of the shoe insole, means engageable with the upstanding lasting margin of the shoe 14 providing a passage through which fluidzadhesiyefrom the. containermay' reach: the nozzle orifice, the nozzle being: movable: rearward-1y,- relatively to the insole, thereby to spreadthe adhesive.con-- stitutmg said gob.-

25. A manually actuable appliance for use" in tea lasting a shoe,- said applianc'e comprisi-ng a portablecontainer for: adhesive and a nozzle mem her hired tothe container and having-a single, substantially U-shaped curved delivery orifice con-forming substantially to thecurvature of the: toe end of the shoe to be lasted and operative: to deliver a unitary U-shaped gob of adhesive substantially conforming to the contour of the-for i warded'ge oi the toe portion of the insolefthe delivery orifice: being arranged to discharge the adhesive into direct contact-with the'expos'edsur face of the insole, and means for initiating the expulsion of adhesive from said orifice.

26. In combination in apparatus for use in depositing a single, unitary gob of adhesive upon the to'e end 01" the insole of a shoe prepared for lasting, said apparatus comprising aportable container for'adhesive, a foot fixed to the contain-erand'having a substantially flat under surface designedto rest directly upon the toe portion of the insole, saidioot having therein an interior chamber, means for conducting adhesive from the container to said chamber; means providing a floor for'said chamber, the'floor having therein a single substantially U-sha-ped orificethrou'gh whichadhesive from" said chamber may be ext-ruded in the form of a unitarylll shaped gobu'pon the toe end of the insoleof the shoe while thefoot remains stationary: on the insole, and

meansforcontrol-ling the" flow of adhesive from the container to saidcha'mber. r

2'7. In combination in apparatus for applying a uniitarygobof adhesive to the marginal portion of one end of a shoe insole, a portable container for adhesive, the container having a rigid bottom member provided a one side with a rigid laterallyextending foot whoseundersu rface is substantial- 1y flush with the undersurface of the bottom member, the foot being designedtorest upon said end portion of the insole, said foot having a single U-shap'ed curved orifice in its under surface which communicates with the interior of the container" and which-substantially conforms in contour to the curvature of theedge'of'said' end portion of the insole, a valve element, normally upper to locate the nozzle in fixed position relaclosing said orifice, but which opens downwardly in response toa predetermined fluid pressure acting at its upper surface, and means whereby, at will, such predetermined fluid pressure may be established within the container thereby initiating the expulsion of fluid adhesive from said orifice in a single gob while the foot remains at rest on the insole thereby to provide a curved adhesively coated area extending along the margin of the insole at the end of the latter.

28. An appliance for use in applying adhesive to the marginal portion of one end of a shoe insole preparatory to lasting, said appliance comprising a fluid tight container having a rigid bottom 'memberprovided at one side with a rigid laterally-extending foot having a substantially flat undersurface designed to rest upon said end container and which is spaced inwardly from and which is of a curvature substantially corresponding to that of said curved edge of the foot, a resiliently flexible valve normally closing said orifice and which opens downwardly in response to a predetermined fluidpressure acting upon its upper surface, and means whereby, at will, such a predetermined fluid pressure is established within the container thereby initiating the deliverycf fluid adhesive through said orifice in a single gob while the foot remains at rest thereby to form a curved, adhesively coated area extending along the margin of the toe portion of the insole.

29. Apparatus for use in applying adhesive to the marginal portion of the insole of a shoe assembled with an upper upon a last in readiness for lasting, said apparatus comprising a portable container for fluid adhesive, 2, foot designed to rest upon the toe portion of the insole, said foot having a curved edge designed to fit within the upturned lasting margin of the shoe upper and having within it a segmental cavity, a normally fixed but removable part normally forming a floor for the cavity, said floor-forming part having a flat under surface for contact with the inner sole, one edge of the floor being so spaced from the wall of the cavity as to define a single, substantially U-shaped orifice, and means defining a passage for conveying adhesive from the container to said orifice.

30. In combination in apparatus for applying adhesive to the marginal portion of a shoe insole assembled with an upper upon a last in readiness for lasting, said apparatus comprising a nozzle having a curved, forward edgedesigned to fitwithin the upstanding lasting margin at one end of the shoe, said nozzle having a segment-shaped cavity, a normally fixed but removable segment-shaped block having a flat under surface for contact with the insole of the shoe, said block having a forward edge of lesser radius of curvature than that of the cavity and being so disposed in the cavity that the curved edge of the block is spaced from the edge of the cavity thereby defining a single curved orifice, and means for supplying fluid adhesive for delivery through said orifice.

31. In combination in apparatus for use in toe lasting, a portable container for adhesive, means for heating thermoplastic material within the container thereby to keep the adhesive fluid, a

file of this patent:

rigid spreader designed to rest upon the toe end of the insole of a' shoe, said spreader having a curved forward edge of such shape and dimensions that it may be fitted snugly within the lipstanding lasting margin of a shoe upper assembled with an insole upon a last inreadiness. for lasting, said spreader having therein a single, narrow delivery orifice, the delivery orifice being curved to'follow the curvature of the forward edge of the foot whereby the adhesive delivered from the orifice is in the form of a unitary, substantially U-shaped gob, and means comprising a manually actuable valve for controlling the flow of adhesive from the container to the orifice.

32. In combination in apparatus-of the class described, a foot having a substantially flat under surface designed to rest upon the toe portion of the insoleof a shoe prepared for lasting, said foot having a curved forward edge of a contour approximating that of the end of the insole, the foot having a single delivery orificecurved to conform substantially to the curvature of the toeportion of the insole, a'portable air-tight container for fluid adhesive, means for conducting adhesive from the container to the orifice, means for supplying air under pressure, and a manually actuablevalve for admitting compressed air from the supply to the container thereby to discharge adhesive through the orifice.

REFERENCES error;

The following references are of record in the UNITED STATES PATENTS Number 215,627 Germany Nov. 1, 1909 

